It isn't the point that Gates made money. The point is: at what cost?
In capitalism, its considered fair to hurt people within legislation, just to make oneself rich. It is argued as the market and "the better shall win", but we are far away from sane market mechanics. More often people suffer than profit from it. The overall goal is to make everyone happy. But this can't be achieved by our capitalism.
"Gates took wealth from the many, many people and gave it to the few."
Those two sentences do not mean the same thing.
Your argument, when you boil it down, is that Bill Gates kept wealth and power for himself and his company, instead of allowing others to have it.
That's called capitalism, I think. I do good, I get money, I don't have to share it if I don't want to.